Pink Floyd star Roger Waters has beaten Bruce Springsteen to the top of the concert ticket sales list so far this year (12).The rocker's The Wall Live show has grossed almost $160 million (£100 million) in sales globally to make Waters the biggest live act on the planet in 2012. Springsteen comes in a distant second thanks to his Wrecking Ball tour ($79.9 million/£50 million). The Boss is expected to overtake Waters by the end of the year (12), while Madonna, who comes in third with $42 million (£26 million), has yet to embark on what is sure to be a money-spinning North American tour.